Journal Published Online: 10 April 2019
Volume 48, Issue 2

Enhancement of Impact Properties by Using Multiwall Carbon Nanotubes as Secondary Reinforcement in Glass/Epoxy Laminates

CODEN: JTEVAB

Abstract

This study is focused on the drop weight low-velocity impact (LVI) response of glass woven polymer composite laminates reinforced with multiwall carbon nanotubes (MWCNTs). Symmetrical quasi-isotropic laminates with zero bending-extension coupling were fabricated. Six hundred-grams per square meter plain glass woven fabric was used as a primary reinforcing agent while MWCNTs were used as the secondary reinforcement. The exceptional mechanical properties of MWCNTs in the context of impact damage tolerance in fiber-reinforced polymer composite laminates were examined and the limitation of scattered data was overcome by doing a range analysis. MWCNT-doped glass fiber reinforced polymer (GFRP) laminates were fabricated in seven proportions (neat, 0.25, 0.5, 0.75, 1, 1.5, and 2 weight percentage of resins) by using the hand layup technique, followed by the vacuum bagging method at 1 atm. By mixing MWCNTs as a secondary reinforcement, the maximum enhancement of 32.6 % in energy absorption, 10.26 % in peak load capacity (at 3.0 m/s impact velocity), and 32.44 % reduction in the visual damage area was attained (at 3.5 m/s indentation). Experiment results (for neat GFRP) were also validated by using three-dimensional finite element analysis software LS-DYNA.

Author Information

Rawat, Prashant
College of Civil Engineering, Hunan University, Changsha, China Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
Singh, K. K.
Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
Behera, Rohit Pratyush
Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
Pages: 16
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Stock #: JTE20170510
ISSN: 0090-3973
DOI: 10.1520/JTE20170510